/*
 * Copyright 2008 Mat Gessel <mat.gessel@gmail.com>
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package asquare.gwt.tk.client.ui.behavior;

public interface InputEvent extends EventBase
{
	boolean isAltDown();
	
	boolean isControlDown();
	
	boolean isMetaDown();
	
	boolean isShiftDown();

	/**
	 * Prevents the default browser action (text selection, image drag, etc...)
	 * 
	 * @throws IllegalStateException if this event is in preview phase
	 */
	void preventDefault();
}
